Heterozygous means that an organism has two different alleles of a gene. For example, pea plants can have red flowers and either be homozygous dominant (red-red), or heterozygous (red-white). If they have white flowers, then they are homozygous recessive (white-white).
Jon Gosselin opened up to Us Weekly about working at TGI Fridays in Lancaster, Pennsylvania, explaining that he took the job because he has a passion for cooking and charity.
1 Dr. Jonathan Hecht, MD is a board certified neurologist in Pleasant Hill, California. He is currently licensed to practice medicine in California, Virginia, and District of Columbia. He is affiliated with Children's National Medical Center and MedStar Washington Hospital Center.  UCSFFellowship.